#**************************************************************************************************
#
#   raylib makefile for Desktop platforms, Raspberry Pi, Android and HTML5
#
#   Copyright (c) 2013-2021 Ramon Santamaria (@raysan5)
#
#   This software is provided "as-is", without any express or implied warranty. In no event
#   will the authors be held liable for any damages arising from the use of this software.
#
#   Permission is granted to anyone to use this software for any purpose, including commercial
#   applications, and to alter it and redistribute it freely, subject to the following restrictions:
#
#     1. The origin of this software must not be misrepresented; you must not claim that you
#     wrote the original software. If you use this software in a product, an acknowledgment
#     in the product documentation would be appreciated but is not required.
#
#     2. Altered source versions must be plainly marked as such, and must not be misrepresented
#     as being the original software.
#
#     3. This notice may not be removed or altered from any source distribution.
#
#**************************************************************************************************

.PHONY: all clean

# Define required raylib variables
PROJECT_NAME       ?= raylib_examples
RAYLIB_VERSION     ?= 3.8.0
RAYLIB_PATH        ?= ..

# Define default options

# One of PLATFORM_DESKTOP, PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
PLATFORM           ?= PLATFORM_DESKTOP

# Locations of your newly installed library and associated headers. See ../src/Makefile
# On Linux, if you have installed raylib but cannot compile the examples, check that
# the *_INSTALL_PATH values here are the same as those in src/Makefile or point to known locations.
# To enable system-wide compile-time and runtime linking to libraylib.so, run ../src/$ sudo make install RAYLIB_LIBTYPE_SHARED.
# To enable compile-time linking to a special version of libraylib.so, change these variables here.
# To enable runtime linking to a special version of libraylib.so, see EXAMPLE_RUNTIME_PATH below.
# If there is a libraylib in both EXAMPLE_RUNTIME_PATH and RAYLIB_INSTALL_PATH, at runtime,
# the library at EXAMPLE_RUNTIME_PATH, if present, will take precedence over the one at RAYLIB_INSTALL_PATH.
# RAYLIB_INSTALL_PATH should be the desired full path to libraylib. No relative paths.
DESTDIR ?= /usr/local
RAYLIB_INSTALL_PATH ?= $(DESTDIR)/lib
# RAYLIB_H_INSTALL_PATH locates the installed raylib header and associated source files.
RAYLIB_H_INSTALL_PATH ?= $(DESTDIR)/include

# Library type used for raylib: STATIC (.a) or SHARED (.so/.dll)
RAYLIB_LIBTYPE        ?= STATIC

# Build mode for project: DEBUG or RELEASE
BUILD_MODE            ?= RELEASE

# Use external GLFW library instead of rglfw module
# TODO: Review usage on Linux. Target version of choice. Switch on -lglfw or -lglfw3
USE_EXTERNAL_GLFW     ?= FALSE

# Use Wayland display server protocol on Linux desktop
# by default it uses X11 windowing system
USE_WAYLAND_DISPLAY   ?= FALSE

# Determine PLATFORM_OS in case PLATFORM_DESKTOP selected
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    # No uname.exe on MinGW!, but OS=Windows_NT on Windows!
    # ifeq ($(UNAME),Msys) -> Windows
    ifeq ($(OS),Windows_NT)
        PLATFORM_OS=WINDOWS
    else
        UNAMEOS=$(shell uname)
        ifeq ($(UNAMEOS),Linux)
            PLATFORM_OS=LINUX
        endif
        ifeq ($(UNAMEOS),FreeBSD)
            PLATFORM_OS=BSD
        endif
        ifeq ($(UNAMEOS),OpenBSD)
            PLATFORM_OS=BSD
        endif
        ifeq ($(UNAMEOS),NetBSD)
            PLATFORM_OS=BSD
        endif
        ifeq ($(UNAMEOS),DragonFly)
            PLATFORM_OS=BSD
        endif
        ifeq ($(UNAMEOS),Darwin)
            PLATFORM_OS=OSX
        endif
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    UNAMEOS=$(shell uname)
    ifeq ($(UNAMEOS),Linux)
        PLATFORM_OS=LINUX
    endif
endif
ifeq ($(PLATFORM),PLATFORM_DRM)
    UNAMEOS=$(shell uname)
    ifeq ($(UNAMEOS),Linux)
        PLATFORM_OS=LINUX
    endif
endif

# RAYLIB_PATH adjustment for different platforms.
# If using GNU make, we can get the full path to the top of the tree. Windows? BSD?
# Required for ldconfig or other tools that do not perform path expansion.
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),LINUX)
        RAYLIB_PREFIX ?= ..
        RAYLIB_PATH    = $(realpath $(RAYLIB_PREFIX))
    endif
endif
# Default path for raylib on Raspberry Pi, if installed in different path, update it!
# This is not currently used by src/Makefile. Not sure of its origin or usage. Refer to wiki.
# TODO: update install: target in src/Makefile for RPI, consider relation to LINUX.
ifeq ($(PLATFORM),PLATFORM_RPI)
    RAYLIB_PATH        ?= /home/pi/raylib
endif
ifeq ($(PLATFORM),PLATFORM_DRM)
    RAYLIB_PATH        ?= /home/pi/raylib
endif

ifeq ($(PLATFORM),PLATFORM_WEB)
    # Emscripten required variables
    EMSDK_PATH         ?= C:/emsdk
    EMSCRIPTEN_PATH    ?= $(EMSDK_PATH)/upstream/emscripten
    CLANG_PATH          = $(EMSDK_PATH)/upstream/bin
    PYTHON_PATH         = $(EMSDK_PATH)/python/3.9.2-1_64bit
    NODE_PATH           = $(EMSDK_PATH)/node/14.15.5_64bit/bin
    export PATH         = $(EMSDK_PATH);$(EMSCRIPTEN_PATH);$(CLANG_PATH);$(NODE_PATH);$(PYTHON_PATH);C:\raylib\MinGW\bin:$$(PATH)
endif

# Define raylib release directory for compiled library.
# RAYLIB_RELEASE_PATH points to provided binaries or your freshly built version
RAYLIB_RELEASE_PATH 	?= $(RAYLIB_PATH)/src

# EXAMPLE_RUNTIME_PATH embeds a custom runtime location of libraylib.so or other desired libraries
# into each example binary compiled with RAYLIB_LIBTYPE=SHARED. It defaults to RAYLIB_RELEASE_PATH
# so that these examples link at runtime with your version of libraylib.so in ../release/libs/linux
# without formal installation from ../src/Makefile. It aids portability and is useful if you have
# multiple versions of raylib, have raylib installed to a non-standard location, or want to
# bundle libraylib.so with your game. Change it to your liking.
# NOTE: If, at runtime, there is a libraylib.so at both EXAMPLE_RUNTIME_PATH and RAYLIB_INSTALL_PATH,
# The library at EXAMPLE_RUNTIME_PATH, if present, will take precedence over RAYLIB_INSTALL_PATH,
# Implemented for LINUX below with CFLAGS += -Wl,-rpath,$(EXAMPLE_RUNTIME_PATH)
# To see the result, run readelf -d core/core_basic_window; looking at the RPATH or RUNPATH attribute.
# To see which libraries a built example is linking to, ldd core/core_basic_window;
# Look for libraylib.so.1 => $(RAYLIB_INSTALL_PATH)/libraylib.so.1 or similar listing.
EXAMPLE_RUNTIME_PATH   ?= $(RAYLIB_RELEASE_PATH)

# Define default C compiler: gcc
# NOTE: define g++ compiler if using C++
CC = gcc

ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),OSX)
        # OSX default compiler
        CC = clang
    endif
    ifeq ($(PLATFORM_OS),BSD)
        # FreeBSD, OpenBSD, NetBSD, DragonFly default compiler
        CC = clang
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    ifeq ($(USE_RPI_CROSS_COMPILER),TRUE)
        # Define RPI cross-compiler
        #CC = armv6j-hardfloat-linux-gnueabi-gcc
        CC = $(RPI_TOOLCHAIN)/bin/arm-linux-gnueabihf-gcc
    endif
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
    # HTML5 emscripten compiler
    # WARNING: To compile to HTML5, code must be redesigned
    # to use emscripten.h and emscripten_set_main_loop()
    CC = emcc
endif

# Define default make program
MAKE = make

ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
        MAKE = mingw32-make
    endif
endif

# Define compiler flags:
#  -O1                  defines optimization level
#  -g                   include debug information on compilation
#  -s                   strip unnecessary data from build
#  -Wall                turns on most, but not all, compiler warnings
#  -std=c99             defines C language mode (standard C from 1999 revision)
#  -std=gnu99           defines C language mode (GNU C from 1999 revision)
#  -Wno-missing-braces  ignore invalid warning (GCC bug 53119)
#  -D_DEFAULT_SOURCE    use with -std=c99 on Linux and PLATFORM_WEB, required for timespec
CFLAGS += -Wall -std=c99 -D_DEFAULT_SOURCE -Wno-missing-braces -Wunused-result

ifeq ($(BUILD_MODE),DEBUG)
    CFLAGS += -g
    ifeq ($(PLATFORM),PLATFORM_WEB)
        CFLAGS += -s ASSERTIONS=1 --profiling
    endif
else
    ifeq ($(PLATFORM),PLATFORM_WEB)
        CFLAGS += -Os
    else
        CFLAGS += -s -O1
    endif
endif

# Additional flags for compiler (if desired)
#CFLAGS += -Wextra -Wmissing-prototypes -Wstrict-prototypes
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),LINUX)
        ifeq ($(RAYLIB_LIBTYPE),STATIC)
            CFLAGS += -D_DEFAULT_SOURCE
        endif
        ifeq ($(RAYLIB_LIBTYPE),SHARED)
            # Explicitly enable runtime link to libraylib.so
            CFLAGS += -Wl,-rpath,$(EXAMPLE_RUNTIME_PATH)
        endif
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    CFLAGS += -std=gnu99
endif
ifeq ($(PLATFORM),PLATFORM_DRM)
    CFLAGS += -std=gnu99 -DEGL_NO_X11
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
    # -Os                        # size optimization
    # -O2                        # optimization level 2, if used, also set --memory-init-file 0
    # -s USE_GLFW=3              # Use glfw3 library (context/input management)
    # -s ALLOW_MEMORY_GROWTH=1   # to allow memory resizing -> WARNING: Audio buffers could FAIL!
    # -s TOTAL_MEMORY=16777216   # to specify heap memory size (default = 16MB)
    # -s USE_PTHREADS=1          # multithreading support
    # -s WASM=0                  # disable Web Assembly, emitted by default
    # -s ASYNCIFY                # lets synchronous C/C++ code interact with asynchronous JS
    # -s FORCE_FILESYSTEM=1      # force filesystem to load/save files data
    # -s ASSERTIONS=1            # enable runtime checks for common memory allocation errors (-O1 and above turn it off)
    # --profiling                # include information for code profiling
    # --memory-init-file 0       # to avoid an external memory initialization code file (.mem)
    # --preload-file resources   # specify a resources folder for data compilation
    # --source-map-base          # allow debugging in browser with source map
    CFLAGS += -s USE_GLFW=3 -s ASYNCIFY -s TOTAL_MEMORY=67108864 -s FORCE_FILESYSTEM=1 $(dir $<)resources@resources

    # NOTE: Simple raylib examples are compiled to be interpreter with asyncify, that way,
    # we can compile same code for ALL platforms with no change required, but, working on bigger
    # projects, code needs to be refactored to avoid a blocking while() loop, moving Update and Draw
    # logic to a self contained function: UpdateDrawFrame(), check core_basic_window_web.c for reference.

    # Define a custom shell .html and output extension
    CFLAGS += --shell-file $(RAYLIB_PATH)/src/shell.html
    EXT = .html
endif

# Define include paths for required headers
# NOTE: Some external/extras libraries could be required (stb, physac, easings...)
INCLUDE_PATHS = -I. -I$(RAYLIB_PATH)/src -I$(RAYLIB_PATH)/src/external -I$(RAYLIB_PATH)/src/extras

# Define additional directories containing required header files
ifeq ($(PLATFORM),PLATFORM_RPI)
    # RPI required libraries
    INCLUDE_PATHS += -I/opt/vc/include
    INCLUDE_PATHS += -I/opt/vc/include/interface/vmcs_host/linux
    INCLUDE_PATHS += -I/opt/vc/include/interface/vcos/pthreads
endif
ifeq ($(PLATFORM),PLATFORM_DRM)
    # DRM required libraries
    INCLUDE_PATHS += -I/usr/include/libdrm
endif
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),BSD)
        # Consider -L$(RAYLIB_H_INSTALL_PATH)
        INCLUDE_PATHS += -I/usr/local/include
    endif
    ifeq ($(PLATFORM_OS),LINUX)
        INCLUDE_PATHS += -I$(RAYLIB_H_INSTALL_PATH)
    endif
endif

# Define library paths containing required libs.
LDFLAGS = -L. -L$(RAYLIB_RELEASE_PATH) -L$(RAYLIB_PATH)/src

ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
        # resource file contains windows executable icon and properties
        LDFLAGS += $(RAYLIB_PATH)/src/raylib.rc.data
        # -Wl,--subsystem,windows hides the console window
        ifeq ($(BUILD_MODE), RELEASE)
            LDFLAGS += -Wl,--subsystem,windows
        endif
    endif
    ifeq ($(PLATFORM_OS),BSD)
        # Consider -L$(RAYLIB_INSTALL_PATH)
        LDFLAGS += -L. -Lsrc -L/usr/local/lib
    endif
    ifeq ($(PLATFORM_OS),LINUX)
        # Reset everything.
        # Precedence: immediately local, installed version, raysan5 provided libs
        LDFLAGS = -L. -L$(RAYLIB_INSTALL_PATH) -L$(RAYLIB_RELEASE_PATH) -L$(RAYLIB_PATH)
    endif
endif

ifeq ($(PLATFORM),PLATFORM_RPI)
    LDFLAGS += -L/opt/vc/lib
endif

# Define any libraries required on linking
# if you want to link libraries (libname.so or libname.a), use the -lname
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
        # Libraries for Windows desktop compilation
        # NOTE: WinMM library required to set high-res timer resolution
        LDLIBS = -lraylib -lopengl32 -lgdi32 -lwinmm
        # Required for physac examples
        LDLIBS += -static -lpthread
    endif
    ifeq ($(PLATFORM_OS),LINUX)
        # Libraries for Debian GNU/Linux desktop compiling
        # NOTE: Required packages: libegl1-mesa-dev
        LDLIBS = -lraylib -lGL -lm -lpthread -ldl -lrt

        # On X11 requires also below libraries
        LDLIBS += -lX11
        # NOTE: It seems additional libraries are not required any more, latest GLFW just dlopen them
        #LDLIBS += -lXrandr -lXinerama -lXi -lXxf86vm -lXcursor

        # On Wayland windowing system, additional libraries requires
        ifeq ($(USE_WAYLAND_DISPLAY),TRUE)
            LDLIBS += -lwayland-client -lwayland-cursor -lwayland-egl -lxkbcommon
        endif
        # Explicit link to libc
        ifeq ($(RAYLIB_LIBTYPE),SHARED)
            LDLIBS += -lc
        endif
    endif
    ifeq ($(PLATFORM_OS),OSX)
        # Libraries for OSX 10.9 desktop compiling
        # NOTE: Required packages: libopenal-dev libegl1-mesa-dev
        LDLIBS = -lraylib -framework OpenGL -framework Cocoa -framework IOKit -framework CoreAudio -framework CoreVideo
    endif
    ifeq ($(PLATFORM_OS),BSD)
        # Libraries for FreeBSD, OpenBSD, NetBSD, DragonFly desktop compiling
        # NOTE: Required packages: mesa-libs
        LDLIBS = -lraylib -lGL -lpthread -lm

        # On XWindow requires also below libraries
        LDLIBS += -lX11 -lXrandr -lXinerama -lXi -lXxf86vm -lXcursor
    endif
    ifeq ($(USE_EXTERNAL_GLFW),TRUE)
        # NOTE: It could require additional packages installed: libglfw3-dev
        LDLIBS += -lglfw
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    # Libraries for Raspberry Pi compiling
    # NOTE: Required packages: libasound2-dev (ALSA)
    LDLIBS = -lraylib -lbrcmGLESv2 -lbrcmEGL -lpthread -lrt -lm -lbcm_host -ldl
endif
ifeq ($(PLATFORM),PLATFORM_DRM)
    # Libraries for DRM compiling
    # NOTE: Required packages: libasound2-dev (ALSA)
    LDLIBS = -lraylib -lGLESv2 -lEGL -lpthread -lrt -lm -lgbm -ldrm -ldl
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
    # Libraries for web (HTML5) compiling
    LDLIBS = $(RAYLIB_RELEASE_PATH)/libraylib.a
endif

# Define all object files required
CORE = \
    core/core_basic_window \
    core/core_input_keys \
    core/core_input_mouse \
    core/core_input_mouse_wheel \
    core/core_input_gamepad \
    core/core_input_multitouch \
    core/core_input_gestures \
    core/core_2d_camera \
    core/core_2d_camera_platformer \
    core/core_3d_camera_mode \
    core/core_3d_camera_free \
    core/core_3d_camera_first_person \
    core/core_3d_picking \
    core/core_world_screen \
    core/core_custom_logging \
    core/core_window_letterbox \
    core/core_drop_files \
    core/core_random_values \
    core/core_scissor_test \
    core/core_storage_values \
    core/core_vr_simulator \
    core/core_loading_thread \
    core/core_quat_conversion \
    core/core_window_flags \
    core/core_split_screen

SHAPES = \
    shapes/shapes_basic_shapes \
    shapes/shapes_bouncing_ball \
    shapes/shapes_colors_palette \
    shapes/shapes_logo_raylib \
    shapes/shapes_logo_raylib_anim \
    shapes/shapes_rectangle_scaling \
    shapes/shapes_lines_bezier \
    shapes/shapes_collision_area \
    shapes/shapes_following_eyes \
    shapes/shapes_easings_ball_anim \
    shapes/shapes_easings_box_anim \
    shapes/shapes_easings_rectangle_array \
    shapes/shapes_draw_ring \
    shapes/shapes_draw_circle_sector \
    shapes/shapes_draw_rectangle_rounded

TEXTURES = \
    textures/textures_logo_raylib \
    textures/textures_mouse_painting \
    textures/textures_rectangle \
    textures/textures_srcrec_dstrec \
    textures/textures_image_drawing \
    textures/textures_image_generation \
    textures/textures_image_loading \
    textures/textures_image_processing \
    textures/textures_image_text \
    textures/textures_to_image \
    textures/textures_raw_data \
    textures/textures_particles_blending \
    textures/textures_npatch_drawing \
    textures/textures_background_scrolling \
    textures/textures_sprite_button \
    textures/textures_sprite_explosion \
    textures/textures_bunnymark \
    textures/textures_blend_modes \
    textures/textures_draw_tiled \
    textures/textures_poly

TEXT = \
    text/text_raylib_fonts \
    text/text_font_spritefont \
    text/text_font_loading \
    text/text_font_filters \
    text/text_font_sdf \
    text/text_format_text \
    text/text_input_box \
    text/text_writing_anim \
    text/text_rectangle_bounds \
    text/text_unicode \
    text/text_draw_3d

MODELS = \
    models/models_animation \
    models/models_billboard \
    models/models_box_collisions \
    models/models_cubicmap \
    models/models_first_person_maze \
    models/models_geometric_shapes \
    models/models_material_pbr \
    models/models_mesh_generation \
    models/models_mesh_picking \
    models/models_loading \
    models/models_orthographic_projection \
    models/models_rlgl_solar_system \
    models/models_skybox \
    models/models_yaw_pitch_roll \
    models/models_heightmap \
    models/models_waving_cubes

SHADERS = \
    shaders/shaders_model_shader \
    shaders/shaders_shapes_textures \
    shaders/shaders_custom_uniform \
    shaders/shaders_postprocessing \
    shaders/shaders_palette_switch \
    shaders/shaders_raymarching \
    shaders/shaders_texture_drawing \
    shaders/shaders_texture_waves \
    shaders/shaders_julia_set \
    shaders/shaders_eratosthenes \
    shaders/shaders_basic_lighting \
    shaders/shaders_fog \
    shaders/shaders_simple_mask \
    shaders/shaders_spotlight \
    shaders/shaders_hot_reloading \
    shaders/shaders_mesh_instancing \
    shaders/shaders_multi_sample2d

AUDIO = \
    audio/audio_module_playing \
    audio/audio_music_stream \
    audio/audio_raw_stream \
    audio/audio_sound_loading \
    audio/audio_multichannel_sound

PHYSICS = \
    physics/physics_demo \
    physics/physics_friction \
    physics/physics_movement \
    physics/physics_restitution \
    physics/physics_shatter


CURRENT_MAKEFILE = $(lastword $(MAKEFILE_LIST))

# Default target entry
all: $(CORE) $(SHAPES) $(TEXT) $(TEXTURES) $(MODELS) $(SHADERS) $(AUDIO) $(PHYSICS)

core: $(CORE)
shapes: $(SHAPES)
textures: $(TEXTURES)
text: $(TEXT)
models: $(MODELS)
shaders: $(SHADERS)
audio: $(AUDIO)
physics: $(PHYSICS)

# Generic compilation pattern
# NOTE: Examples must be ready for Android compilation!
%: %.c
ifeq ($(PLATFORM),PLATFORM_ANDROID)
	$(MAKE) -f Makefile.Android PROJECT_NAME=$@ PROJECT_SOURCE_FILES=$<
else
	$(CC) -o $@$(EXT) $< $(CFLAGS) $(INCLUDE_PATHS) $(LDFLAGS) $(LDLIBS) -D$(PLATFORM)
endif

# Clean everything
clean:
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
		del *.o *.exe /s
    endif
    ifeq ($(PLATFORM_OS),LINUX)
		find . -type f -executable -delete
		rm -fv *.o
    endif
    ifeq ($(PLATFORM_OS),OSX)
		find . -type f -perm +ugo+x -delete
		rm -f *.o
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
	find . -type f -executable -delete
	rm -fv *.o
endif
ifeq ($(PLATFORM),PLATFORM_DRM)
	find . -type f -executable -delete
	rm -fv *.o
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
	del *.o *.html *.js
endif
	@echo Cleaning done

